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- Using tabu search for dynamic scheduling: the extended job-shop scheduling problemPublication . Madureira, Ana Maria; Ramos, Carlos; Silva, Sílvio do Carmo; Kendall, Graham; Burke, Edmund; Petrovic, SanjaIn most practical environments, scheduling is an ongoing reactive process where the presence of real time information continually forces reconsideration and revision of pre-established schedules. Scheduling algorithms that achieve good or near optimal solutions and can efficiently adapt them to perturbations are, in most cases, preferable to those that achieve optimal ones but that cannot implement such an adaptation. This reality, motivated us to concentrate on tools, which could deal with such dynamic, disturbed scheduling problems, both for single and multi-machine manufacturing settings, even though, due to the complexity of these problems, optimal solutions may not be possible to find. We decided to address the problem drawing upon the potential of Tabu Search to deal with such complex situations.
- Reducing job throughout time: using horizontal scheduling and simultaneous manufacturingPublication . Almeida, Ana; Ramos, Carlos; Silva, Sílvio do Carmo; Kendall, Graham; Burke, Edmund; Petrovic, SanjaThis paper is concerned with reducing job throughput time in job-shop like manufacturing systems using a Horizontal Scheduling approach. We follow this approach because we aim at compressing job throughout time to a minimum. To further enhance this objective we apply Simultaneous Manufacturing through the widespread use of batch overlapping. For this we use a mechanism called Job Scheduling Pattern, which in addition to be particularly effective in reducing job throughout time, maintains operating simplicity and calls for reduced manufacturing coordination.